Modules

Dice Roller for Drupal 6 and 7. This module adds an option to nodes and comments to provide an integrated dice roller.

Character Sheet for Drupal 7. This module provides character sheet moderation and a plugable API for XP handling and system customization for character sheets.

I co-maintain the following modules on drupal.org:

Hotfolder for Drupal 7. Hotfolder provides an API to assist with automated data processing. It monitors a folder on the server and queues uploaded files to be processed according to configured settings.